不同配方生物控草有机肥的田间除草效果评价

Weed Control of Different Formulation Bioorganic Fertilizer in Field Trial

优化生物控草有机肥配方,能够为推广生物控草肥抑草技术提供科学依据。在前期筛选出龙葵等化感植物、高效腐草微生物和除草弯孢菌的基础上,通过田间小区试验比较不同配方的生物控草有机肥在防控稻田杂草的效果。试验结果表明:从株数防效来看,处理4(材料A25 kg/667m^2;材料B 75 kg/667m^2)>处理3(材料A 50 kg/667m^2;材料B 50 kg/667m^2)>处理5(F3)>处理2(材料A 75 kg/667m^2;材料B25 kg/667m^2);从鲜重防效来看,处理4>处理3>处理5>处理2。从杂草防控种类来看,不同配比的处理对莎草、阔叶草的防效优于对稗草。有机生物控草肥F4高量(材料A 25 kg/667m^2;材料B 75 kg/667m^2)对水稻杂草的防控效果显著高于F4低、中量和F3。生物控草有机肥对水电导率和水稻幼苗及分蘖均有一定影响。综上所述,有机生物控草肥F4高量推广前景更好。

In order to supply scientific significance,we optimized best formulation for biocontrol weed bioorganic fertilizer on the base of screening out of Solanum nigrum,saprobiota and Curvularia lunata,effect on the different formulation bioorganic fertilizer in field trial was investigated.The result showed that the weed number control effects known that treatment4(Plant A375kg/hm2,Plant B1125kg/hm2)>treatment3(Plant A750kg/hm2,Plant B750kg/hm2)>treatment5(F3)>treatment2(Plant A1125kg/hm2,Plant B375kg/hm2).the weed weight control effects got that treatment4>treatment3>treatment5>treatment2.From weed species understood that cyperaceae >broadleaved>graminaceous weed.Bioorganic control weed fertilizer(F4,Plant A375kg/hm2,Plant B1125kg/hm2)was the best formulation among F4(Plant A750kg/hm2,Plant B750kg/hm2,Plant A1125kg/hm2,Plant B375kg/hm2)and F3.The influence of rice seedling,rice tillering and water conductivity were existent.It was concluded that the bioorganic control weed fertilizer(F4,Plant A375kg/hm2,Plant B1125kg/hm2)was the best and had good promotion prospect.